Made of ABS plastic ,Good looking and lightweight Large LCD display for easy reading Body fat thickness can be quickly and exactly measured Holding measured display values Mm/inch conversion Manual power off; Low battery warning High quality The size body measure tape:1.5m Function: 1. Digital Body Fat Calipers are easy to use in the privacy of your home. 2. with superior accuracy and reliability. 3. Since the majority of fat on the body is located directly under the skin, a very efficient and practical way to measure your body fat. 4. percentage is skinfold measurement - the scientific approach to the time-honored "pinch an inch" method.